Basic HTML Version
Dedicated Switches
,
, CPU BOARD
J205 '
~ COIN DOOR
INTERFACE - -,
Coin AC,cePtor
, J 1
BOARD J3:
Contro,oSwltch ••
T
'Oranae-Brown
(U17-51
D1'
14
7h-o'o--
,
,
,
2
'Orange-Red
(U17-7) 02 '
,
13
5
,
,
,
,
3
'Orange-Black
(U17-11) 03 '
12
6~'o--
,
,
,
'Orange-Yellow
(U17-9) 04 '
,
4
17
,
,
,
,
'Orange-Green
(U16-9) 05 '
,
6
11
7
_-0"--
,
,
,
'Orange-Blue
(U16-11) 06 :
,
7
10
8
--+-<>'0--
,
,
,
'Orange-Violet
(U16-7)
,
,
8
07,
9
9
--1....-4"--
,
,
,
:Orange-Gray
,
,
9
(16-5)
08,
8
11
~'o--
,
,
,
,
,
,
I~
,Black
,
15
3
,
,
'-
-
,
-
,
1
1
,
,
'-
-
-
-
-
- - -
- - - -
-
-
~
Dedicated Switch Circuit
Coin Acceptor Switches
01
Left Coin Chute
02
Center Coin Chute
03
Right Coin Chute
04
Forth Coin Chute
Control Switches
05
Normal Function: Service Credi1S
Test Function: Escape
OS Normal Function: Volume Down
TestFunction:Ckn¥n
07
Normal Function: Volume
Up
Test Function:
Up
08
Normal Function: Begin Test
Test Function: Enter
CPU BOARD
+5V
+12V
,- - cOiN DOOR - ,
INTERFACE
BOARD
, Coin Acceptor
J3'
or
, Control Switch
,
1-I--~~~4---vv'V'-_'-~-l
X
I
Orange-XXX')( 1 - -_---1 )(
-'--0
,
J205
Dedicated Input
1"·'1
Black
, 151--_---1 31-+--------'
11
I
I
-
L
,
J1
A
B C
,
-
-
-
-
-
- - - -
~
Switch
H
L
L
Off
H
On
H
L
Open
Closed
The dedicated switches operate similar to switches in the matrix except that instead of a column circuit there is a
direct tie to ground. Therefore, the column side is constantly active (low).
When a switch closes the row side (dedicated input) of the circuit activates. The '+" input to the LM339 drops below
+5V therefore its output is low. Since the row circuit (dedicated input) is tied directly to ground through the switch, the
switch is considered closed by the microprocessor. When the swhch opens, the' +" input to the LM339 is above +5V,
lts output
1S
high and the row is inactive.
DEMOLrr/ON MAN 3-3